Brain Teasers Optical Illusions Puzzle Hunts Codes & Ciphers Mechanical Puzzles
Personal Links
Browse Teasers
Search Teasers

Third, Fourth, Fifth

Trick brain teasers appear difficult at first, but they have a trick that makes them really easy.

 

Puzzle ID:#50111
Fun:*** (3.08)
Difficulty:*** (2.35)
Category:Trick
Submitted By:eighsseAus******
Corrected By:eighsse

 

 

 



David showed a piece of paper to Kenneth, while covering the top part of it with his hand. The visible portion below his hand read as follows:
THIRD
FOURTH
FIFTH
SIXTH
SEVENTH
EIGHTH
NINTH
TENTH

David said, "My hand is covering two words, the first two words in this list of ten words. The list follows a completely and indisputably logical sequence. None of the words are repeated. I'll bet you $50 that you cannot tell me what those two words are on your first try. You can say the two words in either order."

Kenneth could not see any reason not to accept this wager, and said "First and second" for the easy $50 win. However, after David moved his hand away, Kenneth realized he had lost, and indeed, there was not even an argument to be made. What were the two hidden words?


Answer

"Whole" and "Half." The obvious idea is that the list is of ordinal numbers. However, it is actually a list of the names of the inverse fractions of the natural numbers. That is, 1/1, 1/2, 1/3, etc.
Hide




What Next?

  
  

See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.

 





Back to Top
   


Online Now
8 users and 721 guests

Users In Chat
Aviator
Follow Braingle!
Fold 'N Fly Paper Airplanes
Easy to follow folding instructions and videos.
Copyright © 1999-2017 | FAQ | Widgets | Links | Green | Subscribe | Contact | Privacy | Conditions | Advertise | Braingle Time: 12:20 pm
Sign In Create a free account